Three point charges are placed on a straight line: at

PHYSICS · Single correct · CBSE · Physics · Electric Charges and Fields · Electric Charges and Fields

Problem

Three point charges are placed on a straight line: +6 μC+6\,\mu\text{C} at x=−0.20 mx=-0.20\,\text{m}, −3 μC-3\,\mu\text{C} at x=0x=0, and +2 μC+2\,\mu\text{C} at x=+0.40 mx=+0.40\,\text{m}. Determine the net electric field at the point x=+0.20 mx=+0.20\,\text{m} (give magnitude and direction). (a) 7.9×105 N C−17.9\times10^{5}\,\text{N C}^{-1} rightward (b) 5.6×105 N C−15.6\times10^{5}\,\text{N C}^{-1} rightward (c) 7.9×105 N C−17.9\times10^{5}\,\text{N C}^{-1} leftward (d) 0.90×105 N C−10.90\times10^{5}\,\text{N C}^{-1} leftward

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